Txawm hais tias zaj duab xis kub yaj nplaum thiab tus kheej nplaum yog tib yam khoom, lo lus nug no zoo li tau ua rau ntau tus neeg ntxhov siab. Ntawm no kuv tuaj yeem qhia koj meej meej tias zaj duab xis kub yaj nplaum thiab tus kheej nplaum tsis yog tib yam khoom nplaum. Peb tuaj yeem nkag siab luv luv txog qhov txawv ntawm ob qho los ntawm peb yam hauv qab no:
1. Qhov sib txawv ntawm lub zog sib txuas: Cov nplaum kub yaj yog cov nplaum uas sib txuas nrog cua sov. Nws yog ib qho khoom khov kho nrog kev ua haujlwm ruaj khov ntawm chav tsev kub thiab tsis muaj viscosity.
Nws yuav nplaum tsuas yog thaum nws yaj, thiab nws yuav khov tom qab txias, tsis muaj nplaum, zoo li yas. Muaj ntau hom zaj duab xis kub yaj nplaum, thiab ntau hom zaj duab xis kub yaj nplaum muaj cov ntsiab lus yaj sib txawv, uas feem ntau npog qhov kub qis, kub nruab nrab, thiab kub siab. Cov nplaum tus kheej yog cov nplaum tus kheej. Lawv nplaum ntawm chav tsev kub. Lawv kuj muaj qhov taw tes yaj, tab sis feem ntau qhov taw tes yaj qis heev, kwv yees li 40 degrees. Qhov qis dua qhov taw tes yaj, qhov qis dua qhov sib txuas tom qab txias, uas kuj yog ib qho laj thawj tseem ceeb vim li cas cov nplaum tus kheej yooj yim dua rau rhuav tom qab raug nplaum.
2 Qhov sib txawv ntawm kev tiv thaiv ib puag ncig: Yuav tsum tau hais tias kev tiv thaiv ib puag ncig ntawm cov zaj duab xis kub yaj tau lees paub los ntawm ntau yam kev lag luam, thiab nws kuj yog cov yam ntxwv ntawm kev tiv thaiv ib puag ncig uas tau siv dav. Tus nqi tsim khoom thiab kev ua cov nplaum tus kheej yog qhov tsawg, tab sis nws cov kev ua tau zoo tiv thaiv ib puag ncig yeej tsis sib piv rau cov zaj duab xis kub yaj nplaum.
3. Qhov sib txawv ntawm txoj kev siv: Kev siv cov zaj duab xis kub yaj feem ntau yog siv lub tshuab sib xyaw los sib xyaw cov ntaub ntawv. Cov nplaum tus kheej muaj qhov melting point qis thiab yog kua, uas nyuaj rau ua rau lwm yam duab. Txoj kev "txhuam" feem ntau yog siv thaum siv cov kua nplaum. Qhov tsis zoo ntawm txoj kev no yog tias cov kua nplaum feem ntau thaiv cov qhov hws ntawm daim ntaub, ua rau airtightness.
Lub sijhawm tshaj tawm: Cuaj hlis-01-2021